diff --git a/package.json b/package.json
index f8778d1..c7e5ffb 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,9 @@
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "files": [
-    "dist"
+    "dist",
+    "docs",
+    "skills"
   ],
   "exports": {
     ".": {
@@ -79,6 +81,9 @@
   },
   "antelopeJs": {
     "standalone": true,
-    "test": "src/antelope.test.ts"
+    "test": "src/antelope.test.ts",
+    "skills": [
+      "./skills"
+    ]
   }
 }
diff --git a/skills/data-api-interface/SKILL.md b/skills/data-api-interface/SKILL.md
new file mode 100644
index 0000000..42ea05d
--- /dev/null
+++ b/skills/data-api-interface/SKILL.md
@@ -0,0 +1,91 @@
+---
+name: data-api-interface
+description: AntelopeJS interface that generates CRUD REST endpoints from a database table via a DataController class and field decorators (Access, Listable, Mandatory, Sortable, Filter, Foreign, Joined, Computed, Validator). Use when importing @antelopejs/interface-data-api or @antelopejs/interface-data-api/metadata, when building a data controller / data API over an interface-database table, or when working with DataController, DefaultRoutes, RegisterDataController, ModelReference, or filter_/sortKey/sortDirection list query parameters.
+category: antelopejs-interface
+tags: [antelopejs, data-api, crud, rest, decorators]
+---
+
+# Data API Interface
+
+Declarative CRUD layer on top of `@antelopejs/interface-api` (HTTP) and
+`@antelopejs/interface-database(-decorators)` (storage). You build a controller class with
+`DataController(tableClass, routes, Controller("/path"))`, decorate fields to expose them, and get
+`get/list/new/edit/delete` routes generated. Everything here is consumer-side: there is no proxy
+point of its own to implement — the underlying api/database interfaces do the actual crossings, so
+your module must also import those peer interfaces.
+
+## Imports
+
+```typescript
+import { DataController, DefaultRoutes, RegisterDataController, GetDataControllerMeta } from "@antelopejs/interface-data-api";
+import { Access, AccessMode, Listable, Mandatory, Optional, Sortable, Filter, Foreign, Joined, Computed, Validator, ModelReference, ModifierKey } from "@antelopejs/interface-data-api/metadata";
+import { Parameters, Query, Validation } from "@antelopejs/interface-data-api/components";
+```
+
+`/components` is only needed for custom route callbacks (query building, validation helpers).
+
+## Minimal consumption example
+
+```typescript
+import { Controller } from "@antelopejs/interface-api";
+import { DataController, DefaultRoutes, RegisterDataController } from "@antelopejs/interface-data-api";
+import { Access, AccessMode, Listable, Mandatory, ModelReference, Sortable } from "@antelopejs/interface-data-api/metadata";
+import { BasicDataModel, Field, Model, RegisterTable, Table } from "@antelopejs/interface-database-decorators";
+
+@RegisterTable("tasks", "default")
+class Task extends Table {
+  declare _id: string;
+
+  @Field("string")
+  declare summary: string;
+}
+
+class TaskModel extends BasicDataModel(Task, "tasks") {}
+
+@RegisterDataController()
+class TaskAPI extends DataController(Task, DefaultRoutes.All, Controller("/tasks")) {
+  @ModelReference()
+  @Model(TaskModel, "my-database")
+  declare taskModel: TaskModel;
+
+  @Listable()
+  @Access(AccessMode.ReadOnly)
+  declare _id: string;
+
+  @Listable()
+  @Sortable()
+  @Mandatory("new")
+  @Access(AccessMode.ReadWrite)
+  declare summary: string;
+}
+```
+
+This exposes `GET /tasks/get?id=`, `GET /tasks/list`, `POST /tasks/new`, `PUT /tasks/edit?id=`,
+`DELETE /tasks/delete?id=` (repeat `id` to delete several).
+
+## Gotchas
+
+- `@RegisterDataController()` is mandatory: it wires field decorators, parameter providers, and
+  routes. A `@ModelReference()` property holding a `@Model` instance is required too (`Query.GetModel`
+  throws 500 without it).
+- Fields with no decorator are invisible to the API — neither returned nor writable; visibility
+  requires `@Access`. `@Optional()` only registers a field as not-mandatory (it does not expose it).
+- `list` responds `{ results, total, offset, limit }`. `limit` defaults to 10 and is capped at 100
+  (`maxPage`). Sorting uses `sortKey`/`sortDirection` query params and requires `@Sortable` on the
+  field (400 otherwise). List responses only include `@Listable` fields unless `noPluck` is set.
+- Filters come from `filter_<name>=<mode>:<value>` query params (plain value means `eq`); modes are
+  `eq|ne|gt|ge|lt|le` (the default filter compares the raw query-string value — pass a custom filter
+  function to cast for numeric ranges). Only fields declared with `@Filter()` are filterable.
+- `@Joined` and `@Computed` fields are materialized in-database, so `@Sortable` and `@Filter()` work
+  efficiently on them — but those decorators must still be applied explicitly. Such fields are
+  forced read-only and to non-indexed sorting.
+- Route selection: pass a subset like `{ get: DefaultRoutes.Get, list: DefaultRoutes.List }` instead
+  of `DefaultRoutes.All`; use `DefaultRoutes.WithOptions(route, options, endpoint)` to rename an
+  endpoint or preset parameter options.
+- `@Access` accepts per-action overrides, e.g. `@Access(AccessMode.ReadOnly, { edit: AccessMode.ReadWrite })`.
+
+## Deeper reference
+
+See this package's `docs/` chapters — Introduction, Data Controllers, Routes, Access Rights,
+Validators, Listable Fields, Foreign Keys, Filters, Modifiers, Joined Fields, Computed Fields — and
+the shipped `.d.ts` files for exact signatures. Do not duplicate them here.